package com.seu.data.structures.binarySearchTree.d.preorder;

/**
 * Definition for a binary tree node.
 *
 * @author liangfeihu
 * @since 2018/12/4 10:03
 */
public class TreeNode {
    int val;
    TreeNode left;
    TreeNode right;

    TreeNode(int x) {
        val = x;
    }
}